@Test
public void test_DeleteUser_CallsCloseMethodOfEntityManager_WhenCalled() {
removeUser.deleteUser(mockId);
verify(mockEntityManager).close();
}
@Test
public void test_DeleteUser_CallsFindMethodOfEntityManager_WhenCalled() {
removeUser.deleteUser(mockId);
verify(mockEntityManager).find(User.class, mockId);
}